Joseph b



J, B`. PDTTMEYER. STEAM PUMP.

No.zo. y Patentedreb. ze, 1867.

@uiten tutes gutem @fitta JOSEPHv n.- PorTMEYnn, or Purse-unen, PENNSYLVANIA, AssIeNonTo HIMSELF AND NICHOLAS WINTER, oF THE SAME PLAGE.

Letters'Pate-nt-No. 62,360, dwell February`26, 1867.

- IMPROVEMENT 1N' sTEAM'rUMPs.

'ro ALL WHOM 1r MAY coNcnnN;

Be it known that I, JOSEPH B. POTTMEYER, of Pittsburg, in the county of Allegheny, and State of Penn'- sylvania, have invented a new and' useful arrangement-foi" Steam Pump; and I do hereby declare that the :following is afull, clear, and exact descriptionof the construction and operation of the same,-reference being had to the annexed drawings, making a' part of this-speciiication, in whichi Figure lis a vertical section of my improved steam pump through centre of cylinder A, pump chamber B, te. Figure 2 is an end elevation of the steam cylinder A, bed-plate N, &cl, with cylinder head a, steam-chest lidn, piston C, lite., removed, and showing steam' and exhaustconnections.

Figure 3 is a plan of the steam pump with a cross-section through centre ofiste'aim chest E, auxiliary steam chest U,var`id valve V.

To enable others skilled inthe art to make and us'emy invention,'1'will proceedto describe its construction and-operation. I n

A, figs. 1, 2, 3, is the steam cylinder; B, gs. 1 and 3, is. thepump-chambeu C, g. 1, is the-steam piston; D, iig. 1, is the pump-plunger and follower, projecting at both ends, so'as ton travel'close by the valves h hand ii', and to 11 11p-the entire space at each end of the 'pump at eyerystroke; Eygs. 1, .2, and 3, is the mainsteamchest enclosing the valve F; F, gs. 1 and3, is the main steam valve in chest E,`with the steam'passages c c, passing either through or around the same, andwith the exhaust passage d; G, figs. 1 and 3, is the arm or :k'nocker attached to the piston-rod K, and which moves the valve-stem P; H, figs. land 3,*is the dischargechamber attached to the pump B, and containing the' valvesrz'z" l, tig.1, is the ain-chamber attached. to H; K, figs', 1 and 3, is the piston-rod 'which connects the piston C- withthepumpfplunger D; L, ig.'1, is` the `\receiving-eliamber for the pump; M, g. "1, isthe supply-opening to chamber L; 'N5 figs. 1,2, and 8, isthe bed. plate to cylinder A and pump B; O, tig. 1, Vis the discharge-opening from air-'vessel I; P, lgs. 1 al-1d`i3, .is the stem attached tothe valve V; Rand S,gs. 1 and 3,- arevnutsj'or. stops on the valve-stem l, and moved by the arm T, iig. 1, is an extra steam chamber attached: to E; U, figs. 2f and 3, isian 'auxiliarysteam chest bon.l taining the valve V; Y, iig'. 3, is the auxiliary valve inchestU, and-which admits.: and' discharges to and-freinV .the chest E the step-am used in moving valve W, 2,- is the-exhaust pipe from the chest U; X, tigen. 1, 2, and 3, is the main exhaust kfrom-the cylinder A; Y, gs'. 1 and '2, is the main steam pipe which supplies the steam cylinder A,'through chests T and-E; Z, gs. 2 and 3,'is the steam pipe which supplies the chest U. 1,gs. 1 and 3, i's the head to the cylinder A; -b 15", fig. 1, are the steam passages in' cylinder A; ,c cf, figs. and 3, are steam passages around or throughvalve F; d, g. v'1, is an exhaust passage vin valve Fg e e', fig. 1,' are ports between chamber IE and chest E;f f*, fig. 3," are steam passages fromv the-auxiliary' chest'U t'o the main chest E,V crossing each other back of the exhaust port .g g, iig. 3, is'the exhaust opening from thechest U; h h', fg. 1., are the receiving valves to the pump B, set as close as-practicable'to theb'ore opfgchamber; i', iig-1, are `the l discharge valves fromth'e. pump-B to the chest -H,`also set close to bore'of pump; k, figs. 1 andl2, is the valve or cock, admitting steam into the chamber T through pipe Y; l, figs. land-2, is the valve admitting i steam intoU'through Z; m, figs. 1' and`2, .is a valve or cock which regulates the escape of the exhaust st'eafrii from the chest E; n n', figs. 1 and 3, are coversfor the steam chestE. Y v I Theoperations of my improved steam pump are substantially, as follows: The exhaust valve nt being' open, the valves l andvlc are next opened' fornthe admissionof steam. The steam from the pipe `Y passes into the steam chamber (Land -thenthroughthe port e in the steam vchest E, the steam passage c in the valve F, and through thc port b into the cylinder-A. The piston C then begins 'to move forward, and,- throvugh the piston; rod K, communicates a similar motionvto the plunger Din the pump B.' As this plunger advances, it'forms a vacuum in the end of the' pump, from which the plunger 'is receding,`w hich causes thevalve h to'lift, and I drawsinto the pumpi'v-the waternoil, or other liquids contained in the receiving-chamber L; at the same timethe pressure on the' other... side oftheplnnger. causes the discharge-valve z' to open and discharge the contenti!` v of this-end of Vthe pimp :into the. chamber IH. By the'peculiarities of the construction of the plunger D, and' the position of' the receiving-Valves )ila', and discharge-valveszl t", when the plunger D is at the end of the stroke, the space in the pump-chamber is almost entirely lled by the plunger, thus allowing little or no rool' for the' accumulation of air or vapor. When the piston A and plunger D are nearly at the end of the stroke,

the arm G, on the piston-rod K, strilies the stop R on the valve-stern P, and-carries forward the stem, and the valve V,'thus closing the port f from the pressure of the steam in the chest U, and opening the port f which v admits a jet of steam into the chest E, at the same tithe that the exlmust'steamfrom the other end of the chest E is being discharged through the portf into the pipe W. i The valve F is thus forced back by the pressure of steam,`until the passage c comes in linc with the ports e and b, closing the port e', and allowing the steam in the cylinder to escape into the exhaust pipe x., through the port b, whilst the live steam is admitted into the other end of'the cylinder A through the port Z2. The engneis thus reversed and the motion is continued indefinitely, at either a slow'or rapid rate, The speed and efficiency of my improved steam pump is regulated in the following,` manner: Having separate steam connections to thev two steam chests E and U, the valve Z may be wide open Vin order to secure the prompt and positive motion of the valve F, whilst the valve 7c may be so adjusted as to run the engine at a. slow rate of speed, or in fact Aat any required speedwithout affecting the working of the main Valve F. The valve m in the exhaust W may be also adjusted soas `to aeet the working of the valve F, `by either being Wide open or partially closed, thus checking the exhaust, and using as a cushion the lsteam which has been'before used in moving the valve, and thus preventing the jar which would otherwise occur 'at each movement of the valve'F.

What I claim as my invention, and desire to secure by Letters Patent,- is-- y l l ,l

'1. The arrangement of the plug valve F, with its steam passages e and c', audits exhaust channel d, substantally' as described and for the purpose as set forth. l

'2. The arrangiamento? the' valve V, and auxiliary valve F, as descrihetlaml for the purpose set forth.`

3. The arrangement of the throttle m, with reference to the steam chest E and vali'eF, in the manner and for the purpose as set forth.

\ Jos.. B;-"1 0TTMEYER.

Witnesses: p

CONRAD LoMPoR'r, CHARLES RIDGWAY. 

